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It is mandatory that for every table in the LDB hierarchy there should exist one GET statement in the report.
False. It is not essential.
If R1 and R2 are two union compatible relations or functions, then the result of R3 = R1 ∩R2 is the relation that contains all tuples that are in both the relations In other words,
examples of fields in a database
explain the level architectures of the database management system
Construct an ER diagram for a hospital along with a set of patients and a set of medical doctors Associate with every patient a log of the several tests and examinations conducted.
A file manipulation command that extracts some of the records from a file is called ? A file manipulation command that extracts some of the records from a file is called SELECT
What are the two approaches to store relations in distributed database? a) Replication b) Fragmentation
Equi Join: A join in which the joining condition is based on equality among values in the common columns. Common columns show (redundantly) in the result table. Let us Consider th
What are the two types of blocks in the fixed -length representation? Define them. Anchor block: Have the first record of a chain. Overflow block: Have the records other tha
Explain the main advantages of DBMS over File Oriented System ?
Define the Attribute Inheritance The attributes of a higher level entity set are inherited through a lower level entity set made by specialization-generalization hierarchy. Nam
Thank you, for your expert advice. You have provided very useful answer.
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